I have audio chain from 600 ohm at 0 dBM input to pair of 6146 modulator
tubes, was used to modulate single 4x150A tetrode. All mil-spec sealed
transformers, includes mod. transformer. From FAA transmitter 1950's.
- Original Message -
From: "W1EOF" <[EMAIL PROTECTED]>
To: "Discussion of
Hi Mark,
Are you in range of the K1JCL 6m 50.4 AM repeater in CT?
I tried 50.4 here from the Catskills but never heard anything with my 6m
Clegg.
I have a 6m WRL Comet 7C-6A Techceiver you can try to check for local
activity before you expend to much time and money.
73
bob...w2ami x wn2ami 1
Thanks, John.
73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion
On Sun, 8 Jan 2006 21:21:34 -0500 (EST) John Lawson <[EMAIL PROTECTED]>
writes:
>
>
> >
> > - Original Message - From: "Edward B Richards"
> <[EMAIL PROTECTED]>
> >>
> >> I am going to wind a pi
Thanks, Brett.
I understand that RF only travels through the very outer layer of a
conductor, called "skin effect", so thickness does not matter, just
surface area. BTW, are you going to silver plate or spray some kind of
clear-coat on your coil?
73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home o
Thanks, Jim.
73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion
On Sun, 8 Jan 2006 20:02:19 -0600 "Jim Wilhite" <[EMAIL PROTECTED]>
writes:
> Ed, have you considered the 1/8 inch copper tubing? It is not
> commonly
> available but is easier to work with as you wind.
>
On 1/8/06, Brett gazdzinski <[EMAIL PROTECTED]> wrote:
> I am not some kind of 40 meter Nazi, but I like when people tell me
> something has gone
> wacko
I didn't take your posting as being offensive. I too like to be told
if there's something wrong with my signal. As I said, I wish you had
br
Not sure exactrly what you want but B&W coil stock 8 tpi number 14 makes a
wonderful tuner for 80 through 10 meter at full power. A piece 3 inch
diameter 8 tpi number 14 is fine for 160 through 10 at full legal power. A
100 pf split stator in the first case a 200 in the second is sufficent for
any
Mark,
The 6N2 VFO was a low level 8-9 Mhz VFO. As for a
modulator, the guy at the following link used an Eico
730 Plate modulator. Maybe that would do along with an
8.4 Mhz rock for 50.4 6 meter AM. Contact Jim, WB2FCN
for the missing schematic at his site for his home
brew power supply and mod
Thanks to everyone on the list who responded with great ideas and
sources including the ebay seller KQ4BY. I will probably go that route
since I intend to use the middle section of the coil for the link, so I
will need a fairly large coil.
Greg W5RY
-Original Message-
From: [EMAIL PROTEC
I operated one with the modulator EICO 730 and
had good results. However, no 2 meter AM activity
here and no interest. I sold the 6N2 and the modulator
is back on the EICO 720 for when I get it refurbished.
I have my Halli SR42A on every night but nothing.
I may have to sell it and get a new toy.
In case anyone wants to look at the other equipment, here is the parent
directory...
http://wa5bxo.shacknet.nu/N2DTS
Brett
I don't know.
I had no problems with kinking, and I think the stuff I used was thick
walled.
They make springs you slip over the tubing to bend it without kinking, but I
did not need it.
The more copper, the less resistance, so try the thick stuff.
Brett
N2DTS
-Original Message-
From: [
Mark,
It's a 40 meter only class C RF deck, two 4D32 tubes in parallel pie net
output.
I use the vernier drives because they have numbers and pointers, so I can
reset things to
where they need to be.
On the other multi band rigs, I mount a chart that lists the settings for
each band.
This rig is on
I want to put my EF Johnson 6N2 on the air, and I don't want to use a Ranger
of Valiant to drive it. So
I'm going to build a power supply and modulator so I can run it stand-alone.
Questions:
1. Does anyone have suitable iron for sale for a 50W modulator for it? One
source has told me that a
DX-1
- Original Message - From: "Edward B Richards" <[EMAIL PROTECTED]>
I am going to wind a pi section tank coil from 1/4" copper tubing
tomorrow. Mine will be 4" in diameter and 3" in diameter. Which tubing is
best (no kink) thick or thin? Thanks.
A trick to making smooth bends in
Ed, have you considered the 1/8 inch copper tubing? It is not commonly
available but is easier to work with as you wind.
If you are interested, go here:
http://www.plumbingworld.com/coppertubing.html
Buy by the foot..
73 Jim
W5JO
- Original Message -
From: "Edward B Richards" <[EMA
Hi Brett;
I am going to wind a pi section tank coil from 1/4" copper tubing
tomorrow. Mine will be 4" in diameter and 3" in diameter. Which tubing is
best (no kink) thick or thin? Thanks.
73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion
On Sun, 08 Jan 2006 18:48:57 -0
My Kenyon data does not list that number. If it's something like a T-177 or
T-181 then it's about 10hy, 500ma, 5000v isolation, 7A case size. But that's
just a guess based on those part numbers.
73,
Mark W1EOF
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sen
Hi Brett -
Nice looking work. You must take your time, and I'm guessing enjoy some wine
as you build. :-)
Is that an amplifier or an exciter? I'm curious about the vernier dials.
I've never seen them used
except on a self-excited radio where the tuning is *VERY* critical.
Otehrwise it would seem
If it does not need to be real small, one way to get a good coil
is to wind one out of copper tubing.
Home depot sells various types, small/thin, bigger and thicker...
I made the pi net tank coil for the pair of 4D32 rf deck out of copper
tubing,
I soldered big wire terminal lugs (the crimp on ty
> When YHY answered me one of the first things he told me was that my
> audio was low. I looked at the mod current and indeed it was barely
> deflecting on voice peaks. I upped the audio so the mod current was
> where it should be and he said it sounded fine. We were talking for
> about 45 min
Dave, W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association
www.collinsra.com - the CRA Website
Now with PayPal
CRA Nets: 3805 Khz every Monday at 8 PM EST
and 14255 every Saturday at 12 Noon EST
- Original Message -
From: "david knepper" <[EMAIL PROTECTED]>
T
I noticed the same thing. Suspect marginal propagation. The east coast
stations that normally strap in here were weaker than usual. That may
account for the quiet band condx: the distant t-storms are not propagating
well either.
__
Hi Greg,
I just posted a large list with loads of those coils for sale
on here. You must have missed it!
Once again - the descriptions of the coils, along with photos and
prices, can be found at:
http://www.af4k.com/coils.htm
On 7 Jan 2006 at 19:24, Greg Schultz Sr wrote:
> Does anyone know
I built a largish link-coupled tuner several years ago using BC-610 plug-in
coils, which are still available here and there.
73, Barrie, W7ALW
- Original Message -
From: "Greg Schultz Sr" <[EMAIL PROTECTED]>
To: "'Discussion of AM Radio'"
Sent: Sunday, January 08, 2006 8:02 AM
Subje
Greg, the Collins Radio Association has a vast collection of electronic
parts, such as coil stock, etc.
We prefer pickup only but will do mail orders. For anyone needing that
special part, such as variable capacitors, rotary inductors, transformers,
etc. send your needs via email or call.
W
I checked B&W site and they have coil stock but not large enough for
what I need. I am building a balanced link coupled tuner that can cover
at least 80 meters.
Thanks, Greg W5RY
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Wilhite
Sent: Saturday,
Hi all:
Might anyone know the spec for the Kenyon T-180 choke?
Tnx,
Steve
WA2TAK
On 1/7/06, Brett gazdzinski <[EMAIL PROTECTED]> wrote:
> K3MSB, your audio looked very low on the scope, like 20% modulated,
When YHY answered me one of the first things he told me was that my
audio was low. I looked at the mod current and indeed it was barely
deflecting on voice peaks. I upped
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